CN102415038A - PDCCH search space design for LTE-A multi-carrier operation - Google Patents

PDCCH search space design for LTE-A multi-carrier operation Download PDF

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CN102415038A
CN102415038A CN2010800195391A CN201080019539A CN102415038A CN 102415038 A CN102415038 A CN 102415038A CN 2010800195391 A CN2010800195391 A CN 2010800195391A CN 201080019539 A CN201080019539 A CN 201080019539A CN 102415038 A CN102415038 A CN 102415038A
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search volume
carrier wave
carrier
dci
cce
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CN102415038B (en
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W·陈
P·盖尔
J·蒙托约
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Qualcomm Inc
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Qualcomm Inc
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/06—Channels characterised by the type of signal the signals being represented by different frequencies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Abstract

A method, an apparatus, and a computer program product are provided in which a configuration for utilizing a plurality of carriers is received. In addition, a set of PDCCH candidates on a carrier of the plurality of carriers are determined for obtaining DCI for at least one carrier of the plurality of carriers. The number of PDCCH candidates is a function of a number of carriers of the at least one carrier.

Description

Be used for the PDCCH search volume design of LTE-A multi-carrier operation
The cross reference of related application
According to 35U.S.C. § 119 (e); The application requires the U.S. Provisional Patent Application No.61/174 that is entitled as " PDCCH Search Space Design for LTE-A Cross-Carrier Control Signaling (being used for the PDCCH search volume design that LTE-A strides the carrier Control signaling) " in submission on April 30th, 2009; 441 rights and interests, it is clearly included in this through quoting all.
Background
The field
The disclosure relates generally to communication system, relates in particular to physical downlink control channel (PDCCH) the search volume design that is used for senior (LTE-A) Long Term Evolution (LTE) multi-carrier operation.
Background
Wireless communication system by widespread deployment to provide such as various telecommunications service such as phone, video, data, information receiving and broadcasting.Typical wireless communication system can adopt and can support the multiple access technology with multi-user communication through sharing available system resource (for example, bandwidth, transmitting power).The example of this type multiple access technology comprises code division multiple access (CDMA) system, time division multiple access (TDMA) system, frequency division multiple access (FDMA) system, OFDM (OFDMA) system, single-carrier frequency division multiple access (SC-FDMA) system and TD SDMA (TD-SCDMA) system.
These multiple access technologies in various telecommunication standards, adopted with provide make different wireless devices can be in the city, country, area and even the common protocol of the enterprising row communication of global aspect.One example of emerging telecommunication standard is Long Term Evolution (LTE).LTE is one group of enhancing of moving standard to Universal Mobile Telecommunications System (UMTS) by third generation partnership projects (3GPP) promulgation.It is designed to through improving spectrum efficiency, reduce cost, improve service, utilizing new frequency spectrum and use OFDMA, go up other open standards that use SC-FDMA and use multiple-input and multiple-output (MIMO) antenna technology in up link (UL) and integrate and support the access of mobile broadband internet better with going up at down link (DL) better.Yet,, have the needs that further improve the LTE technology along with the demand sustainable growth that mobile broadband is inserted.Preferably, these improvement should be applicable to other multiple access technologies and adopt these technological telecommunication standards.
In LTE-A, each UE can be via being disposed by radio resource control (RRC) signaling of a plurality of component carriers (CC) service.Design as far as the control of multi-carrier operation is important for expense, efficient, reliability, robustness and complexity.
General introduction
In one side of the present disclosure, the method, device and the computer program that receive the configuration that is used to utilize a plurality of carrier waves therein are provided.In addition, confirm to be used for obtaining physical downlink control channel (PDCCH) candidate collection on the carrier wave in these a plurality of carrier waves about the down link control information (DCI) of at least one carrier wave of these a plurality of carrier waves.PDCCH candidate's number is the function of the carrier number of this at least one carrier wave.
In one side of the present disclosure, provide subscriber's installation therein to dispose method, device and the computer program of a plurality of carrier waves.In addition, confirm to be used for to transmit PDCCH candidate collection about the DCI of at least one carrier wave of these a plurality of carrier waves.PDCCH candidate's number is the function of the number of these a plurality of carrier waves.
The accompanying drawing summary
Fig. 1 is a concept map of explaining orally the hard-wired example of the device that adopts treatment system.
Fig. 2 is a concept map of explaining orally the example of the network architecture.
Fig. 3 is a concept map of explaining orally the example of Access Network.
Fig. 4 is a concept map of explaining orally the example that is used in the frame structure in the Access Network.
Fig. 5 is a concept map of explaining orally the example of the radio protocol framework that is used for user and control aspect.
Fig. 6 is a concept map of explaining orally the example of evolved B node and UE in the Access Network.
Fig. 7 is a diagram of explaining orally the UE that receives a plurality of carrier waves.
Fig. 8 is based on cohesive scale the form that is used for because of the PDCCH candidate's of different search volume of UE and shared search volume number is shown.
Fig. 9 A is the diagram of conceptually explaining orally in the control channel element space of the one-component carrier wave that reaches given subframe in LTE the 8th release because of the different search volume of UE.
Fig. 9 B conceptually explains orally the diagram because of the different examplar search space of UE exemplary in the control channel element space of the one-component carrier wave that reaches given subframe.
Figure 10 is another exemplary diagram 1000 because of the different search volume of UE of control channel element space of conceptually explaining orally the given subframe that is used for the one-component carrier wave.
Figure 11 A is used to explain orally through increasing the search volume number increase the diagram of decoding candidate's sum.
Figure 11 B is the diagram that the number that is used to explain orally the decoding candidate through increasing a search volume increases decoding candidate's sum.
Figure 12 is the diagram of conceptually explaining orally based on the PDCCH decoding candidate designs of skew.
Figure 13 conceptually explains orally to stride the diagram that all component carriers are shared the candidate that decodes.
Figure 14 is another diagram of sharing of conceptually explaining orally the decoding candidate.
Figure 15 is the flow chart of method of wireless communication.
Figure 16 is another flow chart of method of wireless communication.
Figure 17 is functional conceptual schema of explaining orally exemplary means.
Figure 18 is functional another conceptual schema of explaining orally exemplary means.
Describe in detail
The detailed description of setting forth below in conjunction with accompanying drawing is intended to the description as various configurations, and be not intended to that expression can put into practice notion described herein configuration only arranged.This detailed description comprises that detail provides the thorough to each conception of species.Yet it will be apparent to those skilled in the art that does not have these details can put into practice these notions yet.In some instances, well-known structure and assembly are shown so that avoid falling into oblivion this genus with the block diagram form.
To provide some aspects of telecommunication system now with reference to various apparatus and method.These apparatus and method will be described in following detailed description and explained orally by (being referred to as " element ") such as various frames, module, assembly, circuit, step, process, algorithms in the accompanying drawings.These elements can use electronic hardware, computer software or its any combination to realize.This dvielement is embodied as hardware or software depends on concrete application and adds the design constraint on all total systems.
As an example, available comprise " treatment system " of one or more processors of any combination of any part of element or element or element realizes.The example of processor comprises: the hardware circuit of microprocessor, microcontroller, digital signal processor (DSP), field programmable gate array (FPGA), programmable logic device (PLD), state machine, gate logic, separation and other are configured to carry out various functional appropriate hardware of describing in the disclosure in the whole text.One or more processors in the treatment system can executive software.But software should broadly be construed to the thread that means instruction, instruction set, code, code segment, program code, program, subprogram, software module, application, software application, software kit, routine, subroutine, object executive item, execution, rules, function etc., no matter its be with software, firmware, middleware, microcode, hardware description language, or other term to address all be like this.Software can reside on the computer-readable medium.As an example; Computer-readable medium can comprise: magnetic storage apparatus (for example; Hard disk, floppy disk, magnetic stripe), CD (for example; Compact disk (CD), digital versatile dish (DVD)), smart card, flash memory device (for example, memory card, memory stick, key actuated device), random-access memory (ram), read-only memory (ROM), programming ROM (PROM), erasable type PROM (EPROM), electric erasable type PROM (EEPROM), register, removable dish, carrier wave, transmission line and any other be used to store or transmit the suitable media of software.Computer-readable medium can reside in the treatment system, outside or stride a plurality of entities that comprise this treatment system and distribute in treatment system.Computer-readable medium can be embodied in the computer program.As an example, computer program can comprise the computer-readable medium in the encapsulating material.Those skilled in the art will recognize that how to depend on concrete application and add all in the overall design constraints of total system come to realize best to provide in the whole text in the disclosure described functional.
Fig. 1 is the concept map that the hard-wired example of the device 100 that adopts treatment system 114 is shown.In this example, treatment system 114 can be embodied as the bus architecture that has by the expression of bus 102 vague generalization ground.The concrete application and the overall design constraints that depend on treatment system 114, bus 102 can comprise the interconnect bus and the bridger of any number.Bus 102 will comprise that the various electrical chains of one or more processors (usually by processor 104 expressions) and computer-readable medium (usually by computer-readable medium 106 expressions) are connected together.Bus 102 also can link such as various other circuit such as timing source, ancillary equipment, voltage regulator and management circuit, and these circuit are well-known in the art, and therefore will repeat no more.EBI 108 provides the interface between bus 102 and the transceiver 110.Transceiver 110 is provided for the means of on transmission medium, communicating by letter with various other devices.The characteristic that depends on device also can provide user interface 112 (for example, keypad, display, loud speaker, microphone, joystick).
Processor 104 is in charge of bus 102 and is handled with general, comprises the execution that is stored in the software on the computer-readable medium 106.Software makes treatment system 114 carry out the various functions that hereinafter is described to any specific device when being carried out by processor 104.Computer-readable medium 106 also can be used to store the data of being handled when the executive software by processor 104.
To provide the example of the telecommunication system that adopts various devices now with reference to the LTE network architecture as shown in Figure 2.The LTE network architecture 200 is shown to have core net 202 and Access Network 204.In this example, core net 202 provides packet-switched services to Access Network 204; Yet with comprehensible, each conception of species that provides in the whole text in the disclosure can be expanded the core net that circuit switched service is provided like those skilled in the art.
Access Network 204 is shown to have single assembly 212; This device 212 is commonly called evolved B node in LTE uses, but also can be called base station, basic transceiver station, radio base station, wireless set, transceiver function, Basic Service Set (BSS), extended service set (ESS) or certain other suitable term by those skilled in the art.Evolved B node 212 provides the access point of going to core net 202 for mobile device 214.The example of mobile device comprises cell phone, smart phone, Session Initiation Protocol phone, laptop devices, PDA(Personal Digital Assistant), satelline radio, global positioning system, multimedia equipment, video equipment, digital audio-frequency player (for example, MP3 player), camera, game console or any other similar function device.Mobile device 214 is commonly called subscriber's installation (UE) in LTE uses, but also can be called mobile radio station, subscriber station, mobile unit, subscriber unit, radio-cell, remote unit, mobile device, wireless device, Wireless Telecom Equipment, remote equipment, mobile subscriber station by those skilled in the art, access terminal, portable terminal, wireless terminal, remote terminal, hand-held set, user agent, mobile client, client computer or other certain suitable terms.
Core net 202 is shown to have the some devices that comprise packet data node (PDN) gateway 208 and gateway 210.PDN Gateway 208 provides to the connection of packet-based network 206 for Access Network 204.In this example, packet-based network 206 is internets, but the notion that the disclosure provides in the whole text is not limited to Internet application.The major function of PDN Gateway 208 is to UE 214 network connectivty to be provided.Packet is transmitted between PDN Gateway 208 and UE 214 through gateway 210, and this gateway 210 serves as the local mobile anchor everywhere when UE 214 roams in Access Network 204.
To provide an example of the Access Network in the LTE network now with reference to Fig. 3.In this example, Access Network 300 is divided into several cellular zones (cellular cell) 302.Evolved B node 304 is assigned to cellular cell 302, and all UE 306 that are configured in cellular cell 302 provide to the access point of core net 202 (referring to Fig. 2).In this example of Access Network 300, do not have centralized controller, but in the replaceability configuration, can use centralized controller.Evolved B node 304 is responsible for all and radio function associated, comprise radio bearer control, access control, mobility control, scheduling, fail safe and with core net 202 in the connectedness of gateway 202 (referring to Fig. 2).
Modulation that Access Network 300 adopted and multiple access scheme can depend on the certain telecommunications standards of just disposing and change.In LTE uses, use OFDM on the DL and on UL, use SC-FDMA with support FDD (FDD) and time division duplex (TDD) both.To easily from following detailed description, understand like those skilled in the art, each conception of species that this paper provides is applicable to that well LTE uses.Yet these notions can easily expand to other telecommunication standards that adopt other modulation and multiple access technology.As an example, these notions can expand to evolution data optimization (EV-DO) or Ultra-Mobile Broadband (UMB).EV-DO and UMB are the air-interface standards as the part of CDMA2000 standard family by third generation partnership projects 2 (3GPP2) promulgation, and adopt CDMA to provide broadband internet to insert to mobile radio station.These notions also can expand to the universal terrestrial radio electricity that adopts wideband CDMA (W-CDMA) and other CDMA variants such as TD-SCDMA and insert (UTRA); Adopt the global system for mobile communications (GSM) of TDMA; And the evolved UTRA (E-UTRA), Ultra-Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20 and the Flash-OFDM that adopt OFDMA.UTRA, E-UTRA, UMTS, LTE and GSM describe in the document from the 3GPP tissue.CDMA2000 and UMB describe in the document from the 3GPP2 tissue.Actual wireless communication standard that is adopted and multiple access technology will depend on concrete application and add all in the overall design constraints of system.
Evolved B node 304 can have a plurality of antennas of supporting the MIMO technology.The use of MIMO technology makes that evolved B node 304 can utilize that the spatial domain comes that support space is multiplexing, beam shaping and transmit diversity.
Spatial reuse can be used on same frequency, transmit simultaneously different data streams.These data flow can be transmitted to single UE 306 to improve data transfer rate or to send a plurality of UE 306 to improve overall system capacity.This is through each data flow of spatial pre-coding, on down link, transmits each through different transmit antennas then and reach through the stream of spatial pre-coding.Data flow through spatial pre-coding arrives at (all) UE 306 with different spaces signature, and this makes each UE 306 can recover with this UE 306 is these one or more data flow of destination.On up link, the data flow that each UE 306 transmits through spatial pre-coding, this makes evolved B node 304 can identify each source through the data flow of spatial pre-coding.
Spatial reuse generally uses when channel conditions is good.When channel conditions is so not favourable, can use beam shaping that emitted energy is focused on one or more directions.This can reach to launch through a plurality of antennas through the spatial pre-coding data.In order to reach good covering in cellular cell edge, the transmission of single current beam shaping can combine transmit diversity to use.
In following detailed description, will describe aspect Access Network various with reference to the mimo system of on down link, supporting OFDM.OFDM is with the spread spectrum on data-modulated several subcarriers in the OFDM code element.These subcarriers are spaced apart with precise frequency.This provides at interval and makes the receiver can be from " orthogonality " of subcarrier restore data.In time domain, can add guard interval (for example, Cyclic Prefix) with antagonism OFDM inter symbol interference to each OFDM code element.Up link can use the SC-FDMA of DFT expansion ofdm signal form to compensate high peak-to-average power ratio (PARR).
Can use various frame structures to support DL and UL transmission.To provide an example of DL frame structure now with reference to Fig. 4.Yet with comprehensible, the frame structure that is used for any application-specific can be depending on factor and the difference of any number like those skilled in the art.In this example, frame (10ms) is divided into the subframe of 10 equal sizes.Each subframe comprises 2 coherent time slots.
Can use resource grid to represent two time slots, per two time slots comprise a Resource Block.Resource grid is divided into a plurality of resource elements.In LTE, Resource Block in frequency domain, comprise 12 coherent subcarriers and in time domain the situation for normal cyclic prefix in each OFDM code element comprise 7 coherent OFDM code elements, or promptly comprise 84 resource elements.As be designated as R 0And R 1Some resource elements comprise DL reference signal (DL-RS).DL-RS comprises because of the different RS of cellular cell (CRS) (being also referred to as shared RS sometimes) and because of the different RS of UE (UE-RS).UE-RS only transmits on the Resource Block that corresponding physical down link sharing channel (PDSCH) is mapped to.The bit number that is carried by each resource element depends on modulation scheme.Therefore, the Resource Block that UE receives is more and modulation scheme is high more, and then the data transfer rate of UE is high more.
The radio protocol framework depends on that concrete application can take various forms.To provide an example of LTE system now with reference to Fig. 5.Fig. 5 is a concept figure of explaining orally the example of the radio protocol framework that is used for user and chain of command.
Forward Fig. 5 to, the radio protocol framework that is used for UE and evolved B node is shown to have three layers: layer 1, layer and layer 3.Layer 1 is lowermost layer and realizes various physical layer signal processing capacities.Layer 1 will be called as physical layer 506 in this article.Layer 2 (L2 layer) 508 are at physical layer link on physical layer 506 more than 506 and between responsible UE and the evolved B node.
In user plane, L2 layer 508 comprises medium access control (MAC) sublayer 510, radio link control (RLC) sublayer 512 and PDCP (PDCP) 514 sublayers, and they terminate in evolved B node place at network side.Although not shown, UE can have some upper stratas at the L2 layer more than 508, the application layer that is included in that network side terminates in the network layer (for example, IP layer) of PDN Gateway 208 (referring to Fig. 2) and locates terminating at the other end (for example, far-end UE, server etc.) that connects.
PDCP sublayer 514 provide different radio to carry and logic channel between multiplexing.PDCP sublayer 514 also provides the header suppression that upper layer data is divided into groups with minimizing wireless radio transmission expense, through making packet private markization that fail safe is provided and being that UE is provided at the switching support between the evolved B node.RLC sublayer 512 provides the Segmentation and Reassembly of upper layer data grouping, reorders with compensation because the out of order reception that mixed automatic repeat request (HARQ) causes to the re-transmission of lost data packet and to what data were divided into groups.Media access control sublayer 510 provides multiplexing between logic channel and the transmission channel.Media access control sublayer 510 also is responsible between each UE, distributing the various radio resources (for example, Resource Block) in the cellular cell.Media access control sublayer 510 also is responsible for the HARQ operation.
At chain of command, the radio protocol framework that is used for UE and evolved B node is basic identical for physical layer 506 and L2 layer 508, and difference is do not have header suppression function for chain of command.Chain of command also comprises radio resource control (RRC) sublayer 516 in the layer 3.RRC sublayer 516 is responsible for obtaining radio resource (that is radio bearer) and is used the RRC signaling to dispose each lower floor between evolved B node and the UE.
Fig. 6 is that evolved B node 610 is in the block diagram of communicating by letter with UE 650 in the Access Network.In DL, be provided for controller/processor 675 from the upper-layer packet of core net.Controller/processor 675 is realized the functional of L2 layer that the previous Fig. 5 of combination describes.In DL, controller/processor 675 header suppression, private markization, packet segmentation are provided and reorder, multiplexing between logic channel and the transmission channel and come to carry out radio resources allocation to UE 650 based on various priority metrics.Controller/processor 675 also is responsible for the re-transmission of HARQ operation, lost packets and to the signaling of UE 650.
TX processor 616 is realized the various signal processing functions of L1 layer (that is physical layer).These signal processing functions comprise coding and interweave with the forward error correction (FEC) of facilitating UE 650 places and the mapping of carrying out to the signal constellation (in digital modulation) based on various modulation schemes (for example, binary phase shift keying (BPSK), QPSK (QPSK), M phase shift keying (M-PSK), M quadrature amplitude modulation (M-QAM)).Subsequently, the code element through coding and modulation is split into parallel flow.Each stream is mapped to the OFDM subcarrier subsequently, multiplexing and use inverse fast Fourier transform (IFFT) to be grouped together subsequently and carry the physical channel of time domain OFDM stream with generation with reference signal (for example, pilot tone) in time domain and/or frequency domain.This OFDM flows by spatial pre-coding to produce a plurality of spatial flows.Channel estimating from channel estimator 674 can be used to confirm coding and modulation scheme and be used for spatial manipulation.This channel estimating can derive out from the reference signal and/or the channel conditions feedback that are transmitted by UE650.Via the transmitter 618TX that separates each spatial flow is offered different antennas 620 subsequently.Each transmitter 618TX modulates the RF carrier wave for transmission with spatial flow separately.
At UE 650 places, each receiver 654RX receives signal through its antenna 652 separately.Each receiver 654RX recovers the information that is modulated on the RF carrier wave and this information is offered receiver (RX) processor 656.
RX processor 656 is realized the various signal processing functions of L1 layer.656 pairs of these information and executing spatial manipulation of RX processor are any spatial flow of destination to recover with UE 650.If a plurality of spatial flows are the destination with this UE 650, they can be combined into single OFDM stream by RX processor 656 so.RX processor 656 uses fast Fourier transform (FFT) that the OFDM stream is transformed from the time domain to frequency domain subsequently.For each subcarrier of ofdm signal, frequency-region signal comprises the separate OFDM stream.Through confirm the signal constellation point that most possibly transmits by evolved B node 610 recover with each subcarrier of demodulation on code element and reference signal.These soft-decisions can be based on the channel estimating that is calculated by channel estimator 658.These soft-decisions decoded subsequently with deinterleaving to recover data and control signal by the original transmission on physical channel of evolved B node 610.These data and control signal are provided for controller/processor 659 subsequently.
Controller/processor 659 is realized the L2 layer that the previous Fig. 5 of combination describes.In UL, control/processor 659 provide between transmission channel and the logic channel branch with, the reorganization of dividing into groups, private mark decipher, head decompress(ion), control signal handle to recover the upper-layer packet from core net.These upper-layer packet are provided for data trap 662 subsequently, and the latter represents all above protocol layer of L2 layer.Various control signals also can be provided for data trap 662 and handle to carry out L3.The also responsible use of controller/processor 659 is really received (ACK) and/or is negated that true receipts (NACK) agreement is carried out error detection to support the HARQ operation.
In UL, data source 667 is used to upper-layer packet is offered controller/processor 659.Data source 667 is represented all above protocol layers of L2 layer (L2).Be similar to DL that combination undertaken by evolved B node 610 and transmit described functionally, controller/processor 659 is that user plane and chain of command are realized the L2 layer through header suppression, private markization, packet segmentation being provided and reordering and carry out based on the radio resources allocation of being done by evolved B node 610 that multiplexing mode comes between logic channel and transmission channel.Controller/processor 659 also is responsible for the re-transmission of HARQ operation, lost packets and to the signaling of evolved B node 610.
Perhaps feeding back the channel estimating of deriving by channel estimator 658 from the reference signal that is transmitted by evolved B node 610 can be used for selecting the coding and the modulation scheme of just fitting and facilitating spatial manipulation by TX processor 668.To offer different antennas 652 by the spatial flow that TX processor 668 generates via the transmitter 654TX that separates.Each transmitter 654TX modulates the RF carrier wave for transmission with spatial flow separately.
Sentence with the similar mode of the described mode of receiver function that combines UE 650 places at evolved B node 610 and to handle UL transmission.Each receiver 618RX receives signal through its antenna 620 separately.Each receiver 618RX recovers the information that is modulated on the RF carrier wave and this information is offered RX processor 670.RX processor 670 is realized the L1 layer.
Controller/processor 659 is realized the L2 layer that the previous Fig. 5 of combination describes.In UL, control/processor 659 provide between transmission channel and the logic channel branch with, the reorganization of dividing into groups, private mark decipher, head decompress(ion), control signal handle to recover the upper-layer packet from UE 650.Come the upper-layer packet of self-controller/processor 675 can be provided for core net.Controller/processor 659 also is responsible for using ACK and/or NACK agreement to carry out error detection to support the HARQ operation.
The treatment system of describing about Fig. 1 100 comprises evolved B node 610.Particularly, treatment system 100 comprises TX processor 616, RX processor 670 and controller/processor 675.The treatment system of describing about Fig. 1 100 comprises UE 650.Particularly, treatment system 100 comprises TX processor 668, RX processor 656 and controller/processor 659.
Fig. 7 is a diagram 700 of explaining orally the UE 702 that receives a plurality of carrier waves.As shown in Figure 7, UE 702 is from evolved B node 704 reception carrier C1 706 and C2 708.Evolved B node 704 is transmitting PDCCH and PDSCH and on carrier wave C2 708, is transmitting PDSCH on the carrier wave C1 706.In having the LTE-A of multi-carrier operation, the PDCCH portability on the carrier wave C1 706 is about the control information (for example, assigning) of carrier wave C2 708.That is, PDCCH can be from can being that the one-component carrier wave C1 706 of principal component carrier wave (or anchor carrier wave) sends, and carry both appointments to carrier wave C1 706 and carrier wave C2 708.In addition, as shown in Figure 7, UE 702 transmits PUCCH and PUSCH on carrier wave C1 710, and on carrier wave C2 712, transmits PUSCH.Carrier wave C1 710 carries the control information about carrier wave C2 712.Though Fig. 7 illustrates the carrier signalling of striding that is used for UL and DL, striding carrier signalling can be at (wherein the single carrier signaling be on UL) on the DL, and perhaps striding carrier signalling can be at (wherein the single carrier signaling be on DL) on the UL.In addition, be illustrated as 2 though be used for the number of the component carrier of UL and DL, the number of component carrier can be different between UL and DL.
Being intended to difference to the PDCCH of different component carriers can be embedded in the control signaling information field or embed via different Cyclic Redundancy Check scrambling (for example, via the different radio net temporary identifier (RNTI) that is used for different component carriers).The design of the PDCCH search volume that is used for the LTE-A multi-carrier operation below is discussed.The control signaling can be included in wherein that PDCCH and PDSCH are positioned at the same carrier Control signaling on the same components carrier wave, is positioned at PDCCH therein and PDSCH and strides the carrier Control signaling on the different component carriers.For given UE, can expect to receive PDCCH control signaling from one or more component carriers.
Fig. 8 is based on cohesive scale the form that is used for because of the PDCCH candidate's of different search volume of UE and shared search volume number is shown.In LTE the 8th release (Rel-8), each UE is asked to keep watch on shared search volume and because of the different search volume of UE.The PDCCH candidate's that UE has to attempt decoding in subframe maximum number is 6 (4 PDCCH candidate be used for control channel element (CCE) cohesive scale 4 and 2 PDCCH candidates are used for CCE cohesive scale 8) and be 16 (number that is used for the PDCCH candidate of CCE cohesive scale 1,2,4 and 8 is respectively 6,6,2 and 2) because of the different search volume of UE in shared search volume.
Each UE is configured to a kind of transmission mode work in seven kinds of transmission modes via the RRC signaling.Under every kind of transmission mode, each UE is asked to keep watch on two different PDCCH sizes.Therefore, the number of false speech detection is: (6+16) * 2=44.That is, each UE is asked to carry out each the decoding candidate and the trial that reach 44 blind decodings most and therefore seek among 22 decoding candidates and uses each the decoding candidate among each these decodings candidate that decode in this two down link control informations (DCI) size.
Each UE can be assigned two or more RNTI (for example, cellular cell RNTI (C-RNTI) and semi-persistent scheduling (SPS) C-RNTI).Confirm that because of the different search volume of UE only (for example, C-RNTI), and the search volume can change with subframe based on a RNTI.More specifically, provide as follows and the corresponding CCE of PDCCH candidate m because of the different search volume of UE with cohesive scale L:
Figure BPA00001449481200111
(formula 1)
I=0 wherein ..., L-1; M=0 ..., M (L)-1; M (L)It is the PDCCH candidate's that keeps watch in the given search volume that will in Fig. 8, define number; Y kEqual (AY K-1) modD; Y -1=n RNTI≠ 0; A=39827; D=65537;
Figure BPA00001449481200112
n sBe the timeslot number in the radio frame, its intermediate value s takes from 0,1 ..., 19; And n RNTIRNTI value corresponding to a uniqueness.
Be used for can overlapping or can not overlap because of the different search volume of UE of different UEs.In addition, be used for can changing and per 10 sub-frame or every 10ms repeat once with subframe because of the different search volume of UE of given UE.In addition, different cohesive scale because of following tree structure in the different search volume of UE, that is, the CCE of cohesive scale L can be always begins with the integral multiple of L.
Potential problems among the LTE-A
No matter carrier wave is distinguished way (promptly; Be embedded in the PDCCH pay(useful) load or via PDCCH CRC scrambling) how; When component carrier carried the PDCCH of PDSCH and/or PUSCH transmission of two or more component carriers of scheduling, the number because of the different PDCCH of UE about given UE that in any given subframe, is used for the component carrier of a link (DL or UL) can be greater than 1.This is different from the 8th release, and in any subframe, every link has one at most because of the different PDCCH's of UE in the 8th release.This therefore on the basis of every UE, created certain " crowded property ".For cohesive scale 1 and 2,6 decoding candidates are at the most arranged, and, 2 decoding candidates are at the most arranged for cohesive scale 4 and 8.Different UE possibly have the search volume of overlapping, and this possibly further limit the decoding candidate's of every cohesive scale number on actual effect.In addition, for example, in any given subframe, be that the number of the carrier wave of given UE scheduling can be at most 5 for a link.For two links (DL+UL), the number of the carrier wave of scheduled can be 10.If the search volume ({ 6 in a search volume and definition and the 8th release is only arranged; 6; 2,2}) identical search volume, the decoding candidate's who then in the 8th release, is provided sum 16 makes and is very difficult to support 10 PDCCH by high efficiency mode; And if this UE search volume overlapping, then use the decoding candidate who is provided to support that 10 PDCCH are unlikely.
The number (that is, different UE can have the different component carriers that carries PDCCH) that different carrier comes balance UE can be striden by this system.Yet this type of PDCCH load balance can not alleviate every UE " crowded property " problem fully.
Fig. 9 A is the diagram of conceptually explaining orally in the CCE space of the one-component carrier wave that reaches given subframe in LTE the 8th release 900 because of the different search volume 902 of UE.As discuss a little earlier, minimize and provide rational dispatching flexibility in order to make the PDCCH blocking probability, need new search volume design.
Be used for the PDCCH search volume design of LTE-A
Fig. 9 B is the exemplary diagram of conceptually explaining orally in the CCE space of the one-component carrier wave that reaches given subframe 950 because of the different search volume 904 of UE.Figure 10 is another exemplary diagram 1000 because of the different search volume of UE of conceptually explaining orally in the CCE space of the one-component carrier wave that reaches given subframe.Shown in Fig. 9 B, in order to solve " crowded property " problem, can increase each number because of the decoding candidate of the different search volume 904 of UE.For example; If decoding candidate's number will be for 6 (such as to cohesive scale 1) usually, the candidate's that then decodes number can be added to 18 to carry the DCI (supposition CC4 or CC5 have with the carrier Control signaling and therefore have their search volume 906,908 respectively) about component carrier CC1, CC2 and CC3.Alternatively or replenish ground, as shown in Figure 10, crowded property problem can be through two or more solve because of the different search volume 1002 of UE for given UE definition.As shown in Figure 10; Have three through component carrier CC1 scheduling because of the different search volume 1002 of UE, wherein each component carrier has a search volume 1002 (supposition CC1 carries the PDCCH about each component carrier among component carrier CC1, CC2 and the CC3).These can separate a side-play amount because of the different search volume of UE, and this side-play amount can be more than or equal to 0 or less than 0, and can be different between each search volume in these search volumes.When side-play amount is 0, because of the different search volume of UE looks as shown in Fig. 9 B.
Because the expection of the number of the component carrier of every UE is what on the basis of every UE, to be disposed, the number of decoding candidate and/or search volume can be different because of particular UE.In addition, if the number of the component carrier of every UE is to dispose semi-staticly, the number of then decode candidate and/or search volume also can dispose semi-staticly.Yet the number of decoding candidate and/or search volume can alternatively be static or dynamically dispose.
PDCCH candidate's number and/or can fit good compromise (that is, have the rational blind Detecting that obtains from the decoding candidate of every search volume total) is provided between the flexibility of the scheduling of UE and the complexity about blind Detecting holding under the situation of the number of the component carrier of considering to be disposed because of the number of the different search volume of UE.
Search volume and/or decoding candidate's direct expansion
Figure 11 A is used to explain orally the diagram 1100 that increases decoding candidate's sum through the number that increases the search volume.Figure 11 B is the diagram 1150 that the number that is used to explain orally the decoding candidate through increasing a search volume increases decoding candidate's sum.As shown in Figure 11 A and Figure 11 B, M be the CC1 number that carries the component carrier of DCI for it (CC1 carry about component carrier CC1, CC2 ..., the DCI of CCM) and K be number because of the different search volume of UE.As M component carrier and K during, suppose N because of the different search volume of UE L, k(M K) is cohesive scale l (1,2,4 or 8) and k the number because of the decoding candidate of the different search volume of UE.Though at k 1≠ k 2Has N when (two different because of the different search volume of UE) L, k1(M, K) ≠ N L, k2(M is possible K), but for oversimplifying, supposes
Figure BPA00001449481200141
In addition, for convenience's sake, the dependence of M and K is dropped, wherein N lIt generally is the number of assembling the decoding candidate of l.
Shown in Figure 11 A, in first design option, can come to increase linearly the number of search volume 1102, and not increase the decoding candidate's of every search volume number based on carrier number M.Thus, K=M and for l={1,2,4,8}, N l=6,6,2,2}.For example; If three component carrier CC1, CC2 and CC3 are dispatched by one-component carrier wave CC1; Then on component carrier CC1, will have three because of the different search volume of UE, these have 6,6,2 and 2 PDCCH decoding candidates because of each search volume in the different search volume of UE respectively for CCE cohesive scale 1,2,4 and 8.
Shown in Figure 11 B, in second design option, a search volume 1154 (K=1) is only arranged, but increase the maximum of decoding candidate's number linearly to all cohesive scale: for l={1,2,4,8}, N l={ 6M, 6M, 2M, 2M}.For example, if three component carrier CC1, CC2 and CC3 are arranged, then will have one because of the different search volume of UE, wherein this search volume has 18,18,6 and 6 PDCCH decoding candidates respectively for CCE cohesive scale 1,2,4 and 8.
In order to keep the rational blind Detecting sum that obtains from the decoding candidate of every search volume, search volume and/or decoding candidate's sum can be limited to specific number.For example, in a design option, for M >=2, the number of search volume is doubled, but the decoding candidate's of every search volume number remains unchanged.That is, for M >=2, K=2 and for l={1,2,4,8}, Nl={6,6,2,2}.For example; If have three component carrier CC1, CC2 and CC3 to dispatch by one-component carrier wave CC1; Then on this component carrier, will have two because of the different search volume of UE, these have 6,6,2 and 2 PDCCH decoding candidates because of each search volume in the different search volume of UE respectively for CCE cohesive scale 1,2,4 and 8.
Alternatively, in another design option,, the decoding candidate's of this search volume number is doubled for M >=2.That is, for M>=2, K=1 and for l={1,2,4,8}, N l=12,12,4,4}.For example; If have three component carrier CC1, CC2 and CC3 to dispatch by one-component carrier wave CC1; Then will have one because of the different search volume of UE, wherein this search volume has 12,12,4 and 4 PDCCH decoding candidates respectively for CCE cohesive scale 1,2,4 and 8.
Any combination of above design option is possible.Thus, can increase the number of search volume and every search volume decoding candidate's number.First and second options provide and have held the big flexibility (more total decoding candidate) of fitting scheduling, but have high complexity, because the search volume increases with the number of component carrier with the decoding candidate linearly.Thus, the PDCCH blind Detecting complexity and the false-alarm that obtain of result possibly be concerned issue.Search volume and/or decoding candidate's increase is restricted to particular value (for example, doubling) Xiang Rongshi scheduling less flexibility is provided, but limited the increase of complexity effectively.
Other alternatives of increase about restriction search volume and/or decoding candidate also are possible.For example, design option can be modified, thereby for the various values of M, makes search volume/decoding candidate double, add to three times and/or add to four times.For example, the decoding candidate is multiplicable for M=2 in the search volume, and can add to three times for M＞2.The combination of other options or above option is available, the complexity of hold fitting the flexibility of scheduling and causing because of the number of decoding candidate and search volume with balance.
Stride carrier wave PDCCH control signaling for LTE-A; But the complexity of keeping a search volume making decoding candidate's number increase predetermined value (for example, doubling) is kept every search volume similar number simultaneously than the number increase predetermined value that makes the search volume decoding candidate is low.The complexity of last option is lower, because derive because of the different search volume of UE only needs a RNTI, rather than as for one option of back, needing two or more RNTI.Can be based on the initial CCE index of PDCCH that comes to derive randomly because of the different ID of UE, number and/or CCE cohesive scale with the available CCE on the carrier wave of search volume.These design options are applicable to that striding in the carrier wave PDCCH control signaling implicit expression (via the CRC mask) to target carrier indicates both with explicit (via the bit of embedding PDCCH payload).
Can not be that all cohesive scale have identical increase on the decoding number of candidates.For example, can not to utilize that { 12,12,4, (it is respectively about the decoding candidate { 6 of cohesive scale 1,2,4 and 8 to 4}; 6,2, the twice of 2}), utilize decoding candidate { 12 but replace; 12,4,2} is not so that increase about the PDCCH decoding candidate of cohesive scale 8.
In addition, not all carrier wave all needs all PDCCH decoding candidates for each cohesive scale.For example, be used for the principal component carrier wave the PDCCH signaling can 6,6,2, in 2} candidate's first complete set, and for secondary component carrier, the PDCCH signaling can 6,6,2, in another subclass of 2} candidate.These subclass of striding different secondary component carriers can overlap wholly or in part.
For the situation of two or more search volumes, if different RNTI is arranged to different component carriers, then the definite of search volume can be based on different RNTI.Alternatively, the definite of search volume can be based on principal component carrier wave RNTI together with fixing RNTI side-play amount.In one situation of back, effective RNTI of any secondary component carrier is that principal component carrier wave RNTI adds side-play amount, and this side-play amount can be uniqueness for each component carrier, is perhaps shared by a plurality of component carriers.If only a RNTI is arranged to all component carriers, so can be based on the RNTI of this uniqueness together with the search volume of deriving of coming together because of the different skew of component carrier.This (a bit) skew can be hard coded or through layer 3 configuration, for example, stride the carrier wave indication field among the PDCCH based on embedding.
PDCCH search volume expansion based on skew
Can know that from above discussion a decoding candidate that similar number can be arranged because of the different search volume of UE and per minute loading gage ripple can be arranged on all component carriers.In view of these character, another alternative is the PDCCH decoding candidate designs that in LTE-A, has based on skew.
Figure 12 is the diagram of conceptually explaining orally based on the PDCCH decoding candidate designs of skew 1200.The initial CCE index of PDCCH that in subframe n, has the cohesive scale l of a component carrier that is used for UE is represented as CCE N, l, this CCE N, lCan as in the 8th release, derive based on UE RNTI.In addition, M be represented as by 0,1 ..., the number of the component carrier of M-1} ordering, wherein 0 is the anchor carrier wave.Shifted by delta L, mBe the m carrier wave (m=1,2 ..., the skew (is unit with CCE) between the initial CCE index of the cohesive scale l on M-1) and the initial CCE index of anchor carrier wave.Thus, the initial CCE index of m carrier wave is by CCE N, l+ Δ L, mProvide.The blind decoding candidate of the similar number of each cohesive scale can be held with the 8th release in the same.These skews can be selected so that different component carriers has decoding candidate or the quadrature decoder candidate who overlaps wholly or in part.As shown in Figure 12, at l=1, M=3, Δ 1,1=2, and Δ 1,2Under=4 the situation, decoding the candidate partly overlap.Though Figure 12 shows the search volume on each component carrier in these component carriers, the additional components carrier wave (for example, carrier wave 3 and carrier wave 4) with search volume can be arranged.
These skews can disposed on every UE basis or on every cellular cell basis.If it is relevant that these skews are not UE, then this configuration can be on every cellular cell basis.This tree structure can be kept on component carrier as much as possible.If keep, then for any m, the Δ of cohesive scale l L, mThe integral multiple of l always.If do not keep, then for any m, Δ L, m=Δ m, and irrelevant with cohesive scale.The skew of striding different carrier can be independently maybe can have certain relation.If independently, then each carrier wave needs its oneself offset collection to be defined.If relevant, then need define fewer purpose skew.A relevant example is a Δ L, m=m Δ L, 1, m＞1 (for identical cohesive scale, the m of the skew skew of the first non-anchor carrier wave always of m non-anchor carrier wave doubly).In the special case of per minute loading gage ripple tree structure, for any l, Δ L, m=Δ m=m Δ 1, m＞1.In this situation, Δ only 1Value need be indicated by evolved B node, and every other skew can implicitly be derived.
For any l and m, Δ L, m=0 egregious cases causes shared between an a plurality of component carriers search volume.Thus, the DCI of any component carrier in can in this search volume of sharing, receiving about these component carriers.These skews can first disposes statically on every UE basis via L3.Alternatively, these skews can static or dynamically configuration.
In first example, Δ L, m=K l* m*l/2, wherein for l={1,2,4,8} has K respectively l=6,6,2, and 2}, and m is the carrier index by other component carriers (that is, except carrier wave 0) of given component carrier scheduling.That is, this side-play amount is size half the of the CCE sum of each cohesive scale.Thus, for the m component carrier, shifted by delta L, mEqual 3m for l=1, equal 6m, equal 4m, and equal 8m for l=8 for l=4 for l=2.In second example, Δ L, m=m*l, wherein m is the carrier index by other component carriers (that is, except carrier wave 0) of given component carrier scheduling.That is, this skew is the every decoding candidate's of given cohesive scale the size of CCE number.Thus, for the m component carrier, offset L, mEqual m for l=1, equal 2m, equal 4m, and equal 8m for l=8 for l=4 for l=2.
Figure 13 conceptually explains orally the diagram 1300 that can stride the shared decoding candidate of all component carriers.UE can be each component carrier and keeps watch on all decoding candidates.For example, as shown in Figure 13, search volume 1302 and search volume 1304 can be on component carrier CC1, and search volume 1302 portabilities are about the DCI of CC1 or CC2, and search volume 1304 portabilities are about the DCI of CC1 or CC2.Thus, search volume 1302,1304 can be shared between two or more component carriers, and each component carrier that UE can be among component carrier CC1 and the CC2 is kept watch on all decoding candidates ( search volume 1302,1304).Carrier wave indicator field (CIF) (this CIF can be three bits) can be used in each search volume 1302,1304 receives with indication which carrier wave DCI is applicable to.Thus, in a sub-frame, the search volume portability is about two DCI of component carrier CC1 and component carrier CC2.UE can be indicated by the CIF in the search volume through which component carrier in definite these component carriers and confirm to receive which component carrier DCI is applicable to.
Figure 14 is the diagram of sharing 1400 of conceptually explaining orally the decoding candidate.Generally speaking, some search volumes can be shared between two or more component carriers, and some search volumes can be exclusively used in specific component carrier.For example; As shown in Figure 14; Search volume 1402 portabilities on the component carrier CC1 are about the DCI of component carrier CC1 or component carrier CC2; Search volume 1404 can be exclusively used in the DCI that carries about component carrier CC3; Search volume 1406 portabilities on the component carrier CC2 are about the DCI of component carrier CC1 or component carrier CC2, and search volume 1408 portabilities on the component carrier CC4 are about the DCI of component carrier CC4, and the search volume on the component carrier CC5 1410 can be exclusively used in the DCI that carries about component carrier CC5.
Figure 15 is about being used for the flow chart 1500 because of the wireless communications method of the different search volume of UE that LTE-A strides the carrier Control signaling.This method receives the configuration (1502) that is used to utilize a plurality of carrier waves.In addition, this method confirms to be used on the carrier wave in these a plurality of carrier waves to obtain the PDCCH candidate collection (1504) about the DCI of at least one carrier wave of these a plurality of carrier waves.PDCCH candidate's number is the function (1504) of the carrier number of this at least one carrier wave.In a configuration, this method is searched for DCI in this carrier wave.In a configuration, the maximum of PDCCH candidate's number increases based on the carrier number of this at least one carrier wave linearly.In a configuration, PDCCH candidate's number still is the function of CCE cohesive scale.In a configuration, in order to confirm this PDCCH candidate collection, this method confirms that at least one is used to obtain the search volume of DCI.The PDCCH candidate is in this at least one search volume.In a configuration, the number of this at least one search volume is based on the carrier number of this at least one carrier wave.In a configuration, the number of this at least one search volume increases based on the carrier number of this at least one carrier wave linearly.In a configuration, based on initial CCE because of this at least one search volume on the number of available CCE on the different ID of UE, this at least one carrier wave or at least one this carrier wave that comes to derive randomly in the CCE cohesive scale.In a configuration, this at least one search volume comprises first search volume, and this method also confirms to be used on second carrier wave to obtain second search volume about the DCI of one or more carrier waves of these a plurality of carrier waves.A side-play amount each other squints for this first search volume and second search volume.In a configuration, each search volume of each CCE cohesive scale has n CCE and these search volumes overlap each other or part overlaps, so that the absolute value that should squint is less than n.In a configuration, this skew is the multiple that comprises the CCE cohesive scale of PDCCH candidate's search volume.In a configuration, with statically, dispose this skew through semi-static ground of radio resource control (RRC) signaling or mode one of dynamically.In a configuration; At least one search volume in these search volumes is shared between at least two carrier waves, and this method is also kept watch on this at least one search volume in these search volumes is applicable to any one carrier wave at least two carrier waves in these a plurality of carrier waves with supervision DCI.
Figure 16 is about being used for the flow chart 1600 because of the wireless communications method of the different search volume of UE that LTE-A strides the carrier Control signaling.This method is used for a plurality of carrier waves and comes configuration UE (1602).In addition, this method confirms to be used for to transmit the PDCCH candidate collection (1604) about the DCI of at least one carrier wave of these a plurality of carrier waves.PDCCH candidate's number is the function of the number of these a plurality of carrier waves.In a configuration, this method transmits this DCI and assigns with scheduling PDCCH in this at least one carrier wave.
Figure 17 is functional conceptual schema 1700 of explaining orally the exemplary means 100 that can be UE 650.Device 100 comprises the module 1702 that receives the configuration be used to utilize a plurality of carrier waves.In addition, this device 100 comprises the module 1704 that is used on the carrier wave of confirming in these a plurality of carrier waves obtaining about the PDCCH candidate collection of the DCI of at least one carrier wave of these a plurality of carrier waves.PDCCH candidate's number is the function of the carrier number of this at least one carrier wave.
Figure 18 is functional conceptual schema 1800 of explaining orally the exemplary means 100 that can be evolved B node 610.Device 100 comprises the module 1802 of coming configuration UE with a plurality of carrier waves.In addition, this device 100 comprises the module of confirming to be used for to transmit about the PDCCH candidate collection of the DCI of at least one carrier wave of these a plurality of carrier waves 1804.PDCCH candidate's number is the function of the number of these a plurality of carrier waves.In a configuration, this method transmits this DCI and assigns with scheduling PDCCH in this at least one carrier wave.
Once more with reference to Fig. 1 and Fig. 6, in a configuration, the equipment 100 that is used for radio communication comprises and is used for coming the device of configuration UE and being used to confirm be used to transmit the device about the PDCCH candidate collection of the DCI of at least one carrier wave of these a plurality of carrier waves with a plurality of carrier waves.PDCCH candidate's number is the function of the number of these a plurality of carrier waves.In a configuration, equipment 100 also comprises the device that is used at this carrier wave search DCI.In a configuration, this equipment 100 comprises also and is used for confirming the PDCCH candidate collection to confirm to be used to obtain the device of at least one search volume of this DCI that these PDCCH candidates are in this at least one search volume.In a configuration, equipment 100 also comprises the device that is used for confirming being used on second carrier wave obtaining about second search volume of the DCI of one or more carrier waves of these a plurality of carrier waves.A side-play amount each other squints for this first search volume and second search volume.In a configuration, this equipment comprises that also said at least one search volume that is used for keeping watch on these search volumes is applicable to the device of the DCI of any one carrier wave at least two carrier waves in these a plurality of carrier waves with supervision.Aforementioned means is the treatment system 114 that is configured to carry out the function of being addressed by aforementioned means.Of preamble, treatment system 114 comprises TX processor 616, RX processor 670 and controller/processor 675.Therefore, in a kind of configuration, aforementioned each device can be TX processor 616, RX processor 670 and the controller/processor 675 that is configured to carry out the function of being addressed by aforementioned each device.
In a configuration, the equipment 100 that is used for radio communication comprises the device that is used for receiving the configuration that is used to utilize a plurality of carrier waves and is used for confirming being used on the carrier wave of these a plurality of carrier waves obtaining the device about the PDCCH candidate collection of the DCI of at least one carrier wave of these a plurality of carrier waves.PDCCH candidate's number is the function of the carrier number of this at least one carrier wave.Aforementioned means is the treatment system 114 that is configured to carry out the function of being addressed by aforementioned means.Of preamble, treatment system 114 comprises TX processor 668, RX processor 656 and controller/processor 659.Therefore, in a kind of configuration, aforementioned means can be TX processor 668, RX processor 656 and the controller/processor 659 that is configured to carry out the function of being addressed by aforementioned means.
Should be appreciated that the concrete order of each step or rank, position are explanations of exemplary way in the disclosed process.Based on design preference, should be appreciated that, again the concrete order of each step or rank, position in these processes of layout.Appended claim to a method presents the key element of various steps with sample order, and and does not mean that and be defined to concrete order or the rank, position that appeared.
Description before providing is in order to make any technical staff in this area all can put into practice various aspects described herein.These aspects various moving changed being understood by those skilled in the art easily, and defined in this article generic principles can be applied to other aspects.Therefore; Claim is not to be intended to be defined to the aspect shown in this paper, but by being authorized and the corresponding to four corner of language claim, wherein to the citation unless specifically stated otherwise of odd number key element; Otherwise be not to be intended to expression " having and only have ", but " one or more ".Only if statement especially in addition, otherwise that term " some/certain " refers to is one or more.The key element of the various aspects that the disclosure is described in the whole text for those of ordinary skills on current or all structures of being known from now on function on equivalents clearly included in this through citation, and be intended to contained by claim.In addition, any content disclosed herein all is not to be intended to contribution to give the public---and no matter whether such disclosing is narrated by explicitly in claims.Only if any key element of claim all is not taken in the explanation of getting off of the regulation of the 6th section of 35U.S.C. § 112---this key element be to use wording " be used for ... device " come clearly to narrate or in the claim to a method situation this key element be to use wording " be used for ... step " narrate.

Claims (60)

1. method of wireless communication comprises:
Reception is used to utilize the configuration of a plurality of carrier waves; And
Confirm to be used on the carrier wave in said a plurality of carrier wave obtaining physical downlink control channel (PDCCH) candidate collection about the down link control information (DCI) of at least one carrier wave of said a plurality of carrier waves, PDCCH candidate's number is the function of the carrier number of said at least one carrier wave.
2. the method for claim 1 is characterized in that, further is included in the said DCI of search in the said carrier wave.
3. the method for claim 1 is characterized in that, the maximum of said PDCCH candidate's number increases based on the carrier number of said at least one carrier wave linearly.
4. the method for claim 1 is characterized in that, said PDCCH candidate's number still is the function of control channel element (CCE) cohesive scale.
5. the method for claim 1 is characterized in that, said definite said PDCCH candidate collection comprises at least one search volume of confirming to be used to obtain said DCI, and said PDCCH candidate is in said at least one search volume.
6. method as claimed in claim 5 is characterized in that the number of said at least one search volume is based on the carrier number of said at least one carrier wave.
7. method as claimed in claim 5 is characterized in that the number of said at least one search volume increases based on the carrier number of said at least one carrier wave linearly.
8. method as claimed in claim 5; It is characterized in that the initial control channel element (CCE) of said at least one search volume on the said carrier wave is based on because of the number of available CCE on the different sign (ID) of subscriber's installation (UE), said at least one carrier wave or in the CCE cohesive scale at least one to derive randomly.
9. method as claimed in claim 5; It is characterized in that; Said at least one search volume comprises first search volume; And said method further comprises second search volume of confirming to be used on second carrier wave to obtain about the DCI of one or more carrier waves of said a plurality of carrier waves, and a side-play amount each other squints for wherein said first search volume and said second search volume.
10. method as claimed in claim 9 is characterized in that, each search volume of each CCE cohesive scale has n control channel element (CCE), and said search volume overlaps each other or part overlaps, so that the absolute value of said side-play amount is less than n.
11. method as claimed in claim 9 is characterized in that, said side-play amount is the multiple of control channel element (CCE) cohesive scale that comprises said PDCCH candidate's said search volume.
12. method as claimed in claim 9 is characterized in that, said side-play amount is with statically, disposes through semi-static ground of radio resource control (RRC) signaling or mode one of dynamically.
13. method as claimed in claim 5; It is characterized in that; At least one search volume in the said search volume is shared between at least two carrier waves, and wherein said method comprises that further said at least one search volume of keeping watch in the said search volume is applicable to the DCI of any one carrier wave at least two carrier waves in said a plurality of carrier wave with supervision.
14. a method of wireless communication comprises:
Come the configure user equipment with a plurality of carrier waves; And
Confirm to be used for transmitting physical downlink control channel (PDCCH) candidate collection about the down link control information (DCI) of at least one carrier wave of said a plurality of carrier waves, PDCCH candidate's number is the function of the number of said a plurality of carrier waves.
15. method as claimed in claim 14 is characterized in that, further is included in to transmit said DCI in said at least one carrier wave with scheduling PDCCH appointment.
16. an equipment that is used for radio communication comprises:
Be used to receive the device of the configuration that is used to utilize a plurality of carrier waves; And
Be used for confirming being used on the carrier wave of said a plurality of carrier waves obtaining the device about physical downlink control channel (PDCCH) candidate collection of the down link control information (DCI) of at least one carrier wave of said a plurality of carrier waves, PDCCH candidate's number is the function of the carrier number of said at least one carrier wave.
17. equipment as claimed in claim 16 is characterized in that, further comprises the device that is used at the said DCI of said carrier wave search.
18. equipment as claimed in claim 16 is characterized in that, the maximum of said PDCCH candidate's number increases based on the carrier number of said at least one carrier wave linearly.
19. equipment as claimed in claim 16 is characterized in that, said PDCCH candidate's number still is the function of control channel element (CCE) cohesive scale.
20. equipment as claimed in claim 16 is characterized in that, the said device that is used for definite said PDCCH candidate collection confirms to be used to obtain at least one search volume of said DCI, and said PDCCH candidate is in said at least one search volume.
21. equipment as claimed in claim 20 is characterized in that, the number of said at least one search volume is based on the carrier number of said at least one carrier wave.
22. equipment as claimed in claim 20 is characterized in that, the number of said at least one search volume increases based on the carrier number of said at least one carrier wave linearly.
23. equipment as claimed in claim 20; It is characterized in that the initial control channel element (CCE) of said at least one search volume on the said carrier wave is based on because of the number of available CCE on the different sign (ID) of subscriber's installation (UE), said at least one carrier wave or in the CCE cohesive scale at least one to derive randomly.
24. equipment as claimed in claim 20; It is characterized in that; Said at least one search volume comprises first search volume; And said equipment further comprises the device that is used for confirming being used on second carrier wave obtaining about second search volume of the DCI of one or more carrier waves of said a plurality of carrier waves, and a side-play amount each other squints for wherein said first search volume and said second search volume.
25. equipment as claimed in claim 24 is characterized in that, each search volume of each CCE cohesive scale has n control channel element (CCE), and said search volume overlaps each other or part overlaps, so that the absolute value of said side-play amount is less than n.
26. equipment as claimed in claim 24 is characterized in that, said side-play amount is the multiple of control channel element (CCE) cohesive scale that comprises said PDCCH candidate's said search volume.
27. equipment as claimed in claim 24 is characterized in that, said side-play amount is with statically, disposes through semi-static ground of radio resource control (RRC) signaling or mode one of dynamically.
28. equipment as claimed in claim 20; It is characterized in that; At least one search volume in the said search volume is shared between at least two carrier waves, and said equipment comprises that further said at least one search volume that is used for keeping watch on said search volume is applicable to the device of the DCI of any one carrier wave at least two carrier waves in said a plurality of carrier wave with supervision.
29. an equipment that is used for radio communication comprises:
Be used for coming the device of configure user equipment with a plurality of carrier waves; And
Be used for confirming being used to transmitting the device about physical downlink control channel (PDCCH) candidate collection of the down link control information (DCI) of at least one carrier wave of said a plurality of carrier waves, PDCCH candidate's number is the function of the number of said a plurality of carrier waves.
30. equipment as claimed in claim 29 is characterized in that, further comprises being used for transmitting the device that said DCI assigns with scheduling PDCCH at said at least one carrier wave.
31. a computer program comprises:
Computer-readable medium, it comprises the code that is used to carry out following action:
Reception is used to utilize the configuration of a plurality of carrier waves; And
Confirm to be used on the carrier wave in said a plurality of carrier wave obtaining physical downlink control channel (PDCCH) candidate collection about the down link control information (DCI) of at least one carrier wave of said a plurality of carrier waves, PDCCH candidate's number is the function of the carrier number of said at least one carrier wave.
32. computer program as claimed in claim 31 is characterized in that, said computer-readable medium further comprises the code that is used at the said DCI of said carrier wave search.
33. computer program as claimed in claim 31 is characterized in that, the maximum of said PDCCH candidate's number increases based on the carrier number of said at least one carrier wave linearly.
34. computer program as claimed in claim 31 is characterized in that, said PDCCH candidate's number still is the function of control channel element (CCE) cohesive scale.
35. computer program as claimed in claim 31 is characterized in that, the said code that is used for definite said PDCCH candidate collection confirms that at least one is used to obtain the search volume of said DCI, and said PDCCH candidate is in said at least one search volume.
36. computer program as claimed in claim 35 is characterized in that, the number of said at least one search volume is based on the carrier number of said at least one carrier wave.
37. computer program as claimed in claim 35 is characterized in that, the number of said at least one search volume increases based on the carrier number of said at least one carrier wave linearly.
38. computer program as claimed in claim 35; It is characterized in that the initial control channel element (CCE) of said at least one search volume on the said carrier wave is based on because of the number of available CCE on the different sign (ID) of subscriber's installation (UE), said at least one carrier wave or in the CCE cohesive scale at least one to derive randomly.
39. computer program as claimed in claim 35; It is characterized in that; Said at least one search volume comprises first search volume; And said computer-readable medium further comprises the code that is used for confirming being used on second carrier wave obtaining about second search volume of the DCI of one or more carrier waves of said a plurality of carrier waves, and a side-play amount each other squints for wherein said first search volume and said second search volume.
40. computer program as claimed in claim 39; It is characterized in that; Each search volume of each CCE cohesive scale has n control channel element (CCE), and said search volume overlaps each other or part overlaps, so that the absolute value of said side-play amount is less than n.
41. computer program as claimed in claim 39 is characterized in that, said side-play amount is the multiple of control channel element (CCE) cohesive scale that comprises said PDCCH candidate's said search volume.
42. computer program as claimed in claim 39 is characterized in that, said side-play amount is with statically, disposes through semi-static ground of radio resource control (RRC) signaling or mode one of dynamically.
43. computer program as claimed in claim 35; It is characterized in that; At least one search volume in the said search volume is shared between at least two carrier waves, and wherein said computer-readable medium comprises that further said at least one search volume that is used for keeping watch on said search volume is applicable to the code of the DCI of any one carrier wave at least two carrier waves in said a plurality of carrier wave with supervision.
44. a computer program comprises:
Computer-readable medium, it comprises the code that is used to carry out following action:
Come the configure user equipment with a plurality of carrier waves; And
Confirm to be used for transmitting physical downlink control channel (PDCCH) candidate collection about the down link control information (DCI) of at least one carrier wave of said a plurality of carrier waves, PDCCH candidate's number is the function of the number of said a plurality of carrier waves.
45. computer program as claimed in claim 44 is characterized in that, said computer-readable medium further comprises and is used for transmitting the code that said DCI assigns with scheduling PDCCH at said at least one carrier wave.
46. a device that is used for radio communication comprises:
Treatment system is configured to:
Reception is used to utilize the configuration of a plurality of carrier waves; And
Confirm to be used on the carrier wave in said a plurality of carrier wave obtaining physical downlink control channel (PDCCH) candidate collection about the down link control information (DCI) of at least one carrier wave of said a plurality of carrier waves, PDCCH candidate's number is the function of the carrier number of said at least one carrier wave.
47. device as claimed in claim 46 is characterized in that, said treatment system further is configured to the said DCI of search in said carrier wave.
48. device as claimed in claim 46 is characterized in that, the maximum of said PDCCH candidate's number increases based on the carrier number of said at least one carrier wave linearly.
49. device as claimed in claim 46 is characterized in that, said PDCCH candidate's number still is the function of control channel element (CCE) cohesive scale.
50. device as claimed in claim 46; It is characterized in that; In order to confirm said PDCCH candidate collection, said treatment system is configured to confirm that at least one is used to obtain the search volume of said DCI, and said PDCCH candidate is in said at least one search volume.
51. device as claimed in claim 50 is characterized in that, the number of said at least one search volume is based on the carrier number of said at least one carrier wave.
52. device as claimed in claim 50 is characterized in that, the number of said at least one search volume increases based on the carrier number of said at least one carrier wave linearly.
53. device as claimed in claim 50; It is characterized in that the initial control channel element (CCE) of said at least one search volume on the said carrier wave is based on because of the number of available CCE on the different sign (ID) of subscriber's installation (UE), said at least one carrier wave or in the CCE cohesive scale at least one to derive randomly.
54. device as claimed in claim 50; It is characterized in that; Said at least one search volume comprises first search volume; And said treatment system further is configured to confirm be used on second carrier wave obtain second search volume about the DCI of one or more carrier waves of said a plurality of carrier waves, and a side-play amount each other squints for wherein said first search volume and said second search volume.
55. device as claimed in claim 54 is characterized in that, each search volume of each CCE cohesive scale has n control channel element (CCE), and said search volume overlaps each other or part overlaps, so that the absolute value of said side-play amount is less than n.
56. device as claimed in claim 54 is characterized in that, said side-play amount is the multiple of control channel element (CCE) cohesive scale that comprises said PDCCH candidate's said search volume.
57. device as claimed in claim 54 is characterized in that, said side-play amount is with statically, disposes through semi-static ground of radio resource control (RRC) signaling or mode one of dynamically.
58. device as claimed in claim 50; It is characterized in that; At least one search volume in the said search volume is shared between at least two carrier waves, and wherein said treatment system further is configured to keep watch on said at least one search volume in the said search volume is applicable to any one carrier wave at least two carrier waves in said a plurality of carrier wave with supervision DCI.
59. a device that is used for radio communication comprises:
Treatment system is configured to:
Come the configure user equipment with a plurality of carrier waves; And
Confirm to be used for transmitting physical downlink control channel (PDCCH) candidate collection about the down link control information (DCI) of at least one carrier wave of said a plurality of carrier waves, said PDCCH candidate's number is the function of the number of said a plurality of carrier waves.
60. device as claimed in claim 59 is characterized in that, said treatment system further is configured in said at least one carrier wave, transmit said DCI and is assigned with scheduling PDCCH.
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US12/770,506 2010-04-29
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